FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Perl Andrew Damian   2. Issuer Name and Ticker or Trading Symbol GLOBAL DEFENSE TECHNOLOGY & SYSTEMS, INC. [GTEC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1501 FARM CREDIT DRIVE, SUITE 2300 3. Date of Earliest Transaction (Month/Day/Year) 12/16/2009 (Street) MCLEAN, VA 22102-5011 4. If Amendment, Date Original Filed(Month/Day/Year) 12/17/2009 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock               3,803,274 (1) I See Footnote (2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Perl Andrew Damian 1501 FARM CREDIT DRIVE SUITE 2300 MCLEAN, VA 22102-5011	X	X
Contego Systems LLC 1501 FARM CREDIT DRIVE SUITE 2300 MCLEAN, VA 22102-5011		X
Kende Holding kft ZICHY JENO U. 4 BUDAPEST, K5 1066		X
Global Strategies Group Holding S.A. 15 BOULEVARD ROOSEVELT, L-2450 N4		X

Signatures

/s/ Lisa Broome, Attorney-in-Fact for A. Damian Perl**		03/01/2010
**Signature of Reporting Person		Date
/s/ Lisa Broome, Attorney-in-Fact for Contego Systems LLC**		03/01/2010
**Signature of Reporting Person		Date
/s/ Lisa Broome, Attorney-in-Fact for Kende Holding kft**		03/01/2010
**Signature of Reporting Person		Date
/s/ Lisa Broome, Attorney-in-Fact for Global Strategies Group Holding, S.A.**		03/01/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	In a Form 4 filed December 17, 2009, it was reported that A. Damian Perl, as a non-employee director of the Issuer, was granted 3,845 restricted shares by the Issuer on December 16, 2009, with such shares scheduled to vest in three equal, annual installments beginning on the first anniversary of the grant date. This amendment is being filed to reflect the fact that instead of receiving such restricted shares, A. Damian Perl will receive cash in an amount equal to the value of such restricted shares, as determined under FAS 123 as if such shares had been granted on December 16, 2009.
(2)	These shares are owned by Contego Systems LLC ("Contego"). Contego is wholly owned and managed by Kende Holding kft ("Kende"). Kende is 99.98% owned and controlled by Global Strategies Group Holding, S.A. ("GLOBAL"). GLOBAL is controlled by A. Damian Perl.

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